Police were called when a protest erupted at a school in North Yorkshire after students were limited to two toilet breaks a day.
Officers were forced to be called in after up to 40 students took to the playing fields on Friday morning protesting the controversial new rule at Bedale High School.
Parents have criticised the school after being informed the 580 pupils were only allowed a bathroom break between 11.05am and 11.25am, and 12.25pm and 12.45pm.
The decision was criticised as "breaching human rights", but the 11-16 comprehensive school maintains the toilets are accessible on request and to those who held a 'medical card'.
Parents first learned of the new policy by a letter in February, which ITV reported as saying: "There is no access to the main building (where the toilets are located) after 12.45pm."
Lunch finishes at 1.10pm, adding to the outrage.
One parent, who posted anonymously on Facebook, said: “I believe that this is humiliating and undignified and is a breach of human rights to be denied access to toilets at any other time unless you have a medical need, and totally ridiculous to say that you cannot go to the toilet after you have had lunch.
“My daughter had stayed behind in her class to do extra work and then went to the toilet at 12.45pm but staff wouldn't let her go.
In pictures: World Toilet Day
In pictures: World Toilet Day
Rubina, 38, has lived in Mollar Bosti slum in Dhaka for 3 years. She moved from the countryside when her husband got a job in Dhaka. The toilet she uses is known as a shared hanging toilet and is situated 20 metres from her house. She says that once, in middle of the night, she went to the toilet and someone knocked the toilet door so hard she thought they were going to break the door down. She got very scared and since then, she has been too scared to use the toilet after 9pm
Martine is 27 years old. She lives near a river in Cayimithe. "I don't have an enclosed toilet. My toilet is a hole in the ground by my house, which is now full and has become really dangerous. I only use it at night when I can have some privacy. In the day time, I use a community toilet which is about 15 minutes away from my house"
Rosalie, 9, goes to school in Brussels. "At my school we have separate toilets for girls and boys on every floor. My classroom is on the 3rd floor. We have 22 toilets, which are shared between 230 pupils and 20 adults. The teachers at school let us go to the toilet whenever we need to"
Saritadevi lives in Ittava village in Uttar Pradesh. She has no access to a toilet in her house and so uses a local field. She suffers from a lack of dignity and privacy when she visits the toilet. She says she is humiliated by men, enduring people throwing stones at her, shouting abuse, making vulgar gestures, and playing offensive songs
Renee is an artist who left her former home in the densely populated suburbs of Sydney to live a quieter life in bush surrounds, a one-hour drive north of the city. She has built a shed on ten acres of land and has included an outside toilet and bathroom. Ironically, Renee is able to enjoy total privacy out in the open as she is surrounded by wild bush and forest, far from other houses
Ima, 47, is a public toilet attendant in Kumasi, Ghana’s second largest city. She lives in a rented room with her husband and four children aged 14-22. She is a very dedicated worker and relies on the income from her job to fund her children's education. She does not have a toilet at home. During the day, she uses the public toilet where she works, but at night she is forced to use plastic bags as it is not safe to walk long distances in the dark
June is the Allotment Secretary at Gordon Road Allotments in Finchley, North London. "We used to have a portable toilet, which had to be emptied every so often. It was very smelly and not very nice. Now we have a waterless compost loo, which enables women to stay down at the allotment all day if they wish. It also makes a big difference when we have Open Days. This year, for the first time, we were in the National Gardens Scheme book and had an open day with 170 visitors. We wouldn’t have been allowed to host this event without the compost loo"
Sineha, 71, uses a public toilet which is inside the temple she visits. "They are convenient and cleaned daily by the maid. It is a safe place because we have security guards here 24 hours a day and separate toilets for men and women"
Assucena, 14, is a Grade 8 student who loves to study and play football. She lives with her mother, grandmother, sister and two cousins. Her grandmother sells beer to provide for her extended family. Assucena shares a toilet with more than 30 other people from different families. "When it rains, the toilet floods. It really smells bad"
Fabiola, 69, lives in Cumbayá, a valley near Quito. Between the ages of seven and 21, she shared a toilet with 20 other people, who lived in her condominium. Now she lives in a large apartment, which has five bathrooms. Her bathroom is the biggest one and she is very proud of it as her current situation contrasts vividly with her childhood
Lorena, 16, is a student. She has just moved into one of Rio de Janeiro's favelas. "I don’t have a toilet but I am working hard to try and build one. In the meantime, I have to use my mother's. We only get water on Thursdays and Sundays, when the taps are opened. One day I would like to have a bathroom with running water. I am very vain, I like to have my hair and nails done and use perfume. Some people around here have been in poor health, partly due to the poor sanitation situation in the area"
Mary is a writer who lives in New York City. "Living with two housemates, it is important to schedule our bathroom time and take turns cleaning it. I used to live in Beijing, where I had to use a public bathroom as my apartment didn't have a private toilet. While it was safe and relatively clean, I used to hate putting my coat on just to go to bathroom in the middle of night during winter. That experience made me really appreciate the privacy and comfort of having a clean toilet at home"
Meseret, a restaurant manager in Addis Ababa, shares a one bedroom government house with her two children, two sisters and mother. She was widowed nine years ago when her husband was shot during the aftermath of the 2005 elections. Her shared toilet is a long way away so at night, for safety, the family use the side yard next to their house
Eiko, 61, lives in Tokyo. "Since this department store is close to my home, I often come here for shopping. When I was a child, the public toilets were not clean and smelled bad, but every time I use the bathroom here, I feel so relaxed. I could spend many hours here!" The department store’s toilet, called the "switch room", is a special place where people can switch their mood and feel relaxed. The toilets are an extreme example of good sanitation and have features like surround sound music and heated seats. In the ‘powder room’ next to the toilets, Eiko can charge her mobile phone, watch TV and have a foot massage, turning a basic daily function that we all have to do into a pleasurable and multisensory experience
15/20 South Africa
Nombini has two Porta Potties, which are used by the 12 people who live in her home. When she first moved to Khayelitsha in 2005, she did not have a toilet so she had to go in the bush, across a main road. "It was terrible in the bush, the cars hit you. When we were given a Porta Potty in 2009, it was much better than going in the bush. Flush toilets are first class compared to the Porta Potty though. My dream is to have a flush toilet"
Susan, 46, is the founder of a community school for children with physical and mental disabilities. "It makes me proud and happy to teach disabled children so that in the future they can have a better life and not just stay at home. I was attacked by Polio at the age of two. It’s not easy being disabled in Lusaka. Using the toilet is a challenge, especially in the rainy season, as I have to crawl to the toilets on my hands"
Eunice is the Co-Founder of Kasarani Academy in Naivasha. Previously, the school only had two toilets which were used by 250 pupils. Tenants living nearby used the toilets as well and left them in a poor condition. Because of this, Eunice found that the children preferred to practice open defecation in the grounds around the school, which quickly became a public health issue. Eunice and her husband Paul have now invested in child-friendly toilets. These tiny toilets have prevented adults using them as they cannot fit through the doors. "Parents will enrol their children here because of our child friendly toilets"
Ghita, 48, from Buzescu village, says she is the proud owner of one of the biggest bathrooms in the village. It is 20 square meters. 35% of the population of Buzescu village are Romas who are prosperous and proud to show it off. However, there is no running water or sewerage in the village so toilets are on-site
Vanessa, 17, is a student who lives in Antananarivo. She says she worries when she is on her period at school. "At home, I have a shower outside my house and I can keep clean but when I’m at school, I feel embarrassed during my periods as there is no space to change or wash. I worry that my sanitary napkin will leak if I keep it on for too long while I’m waiting to come back home to change it"
Ms Moeun Sothy is a secondary school student, who lives with her grandmother and her aunty. At home she is responsible for collecting water for the household from the local water source. At her school she is on the children’s rota for cleaning the school toilets once a week. She believes that handwashing with soap is really important, especially after using the toilet
“I wrote to the Head saying I felt this was a breach of human rights and she wrote back saying that those with medical issues would need to get a note from the doctor.
“It's appalling, the fact that if they have got medical issues they have got to show a pass, they are making them a target for bullies, it's just degrading.”
And Pupil Madelaine Anderson agreed, writing: "I find this unfair on everyone not only girls but also boys, not everyone needs to have a 'medical note' to be allowed to use the toilet."
But a notice posted on Bedale High's website defended the move, saying the new behavioural code was part of an overall action plan.
They said: “The code also includes tighter rules on uniform and on reducing the numbers of students outside of classrooms during lesson time.
"As part of this the school has reminded students that toilets are freely accessible during specific periods at lunchtime and break time but that students who need the toilet during lessons, or need access for medical reasons, will always be given access on request. Toilets are therefore accessible at all times."
A spokesman for North Yorkshire police confirmed they were called to a protest at the school but advised staff it was not a police matter.