http://remembersingapore.wordpress.com/2011/01/24/headlines-that-shook-singapore/
Students gathered at the Chinese High School and Chung Cheng High School for protests, and refused to soften their stand even after their parents’ persuasion. On 26 October, police forced their ways into the schools and dispersed the students using tear gas.
The angry students took to the streets, throwing stones at the police and overturning the cars. Curfews were imposed by the government, as more than 900 were arrested. The riots caused 13 lives and left more than 100 injured. The detainees were released in 1959 after the People’s Action Party (PAP) won the election to form the government.

http://ourstory.asia1.com.sg/independence/headline/sch56a.html
The angry students took to the streets, throwing stones at the police and overturning the cars. Curfews were imposed by the government, as more than 900 were arrested. The riots caused 13 lives and left more than 100 injured. The detainees were released in 1959 after the People’s Action Party (PAP) won the election to form the government.

http://ourstory.asia1.com.sg/independence/headline/sch56a.html
Source 2
Taken from the Straits Times, Oct 11 195( http://ourstory.asia1.com.sg/independence/headline/sch56a.html)
Singapore police were alerted last night when more than 4,000 students took over control of two of the Colony's largest Chinese middle schools. As tension mounted at the Chung Cheng School in Goodman Road and the Chinese High School in Bukit Timah Road, the principals and most of the teachers went away, leaving the students in complete control. About 1,000 students gathered at the Chinese High School and about 3,000 at the Chung Cheng School. Meetings were held at both schools. Resolutions were passed condemning the Government's action. Many girl students wept. It is understood the students plan to march to the Education Ministry today to protest against the expulsion of their colleagues. They also plan to boycott classes today.
Source 3

Source 4

Source 5
http://ourstory.asia1.com.sg/independence/ref/riot56.html
On Oct 24, the government issued an ultimatum that the schools be vacated. As the deadline approached, rioting started at the Chinese High School.
The riots spread to other parts of the island. They lasted five days. 13 people were killed and more than 100 were injured.
Hundreds of people were arrested, including Lim Chin Siong, who remained in detention until the Lee Kuan Yew government freed him in 1959, after winning the elections.
Source 6
http://ourstory.asia1.com.sg/independence/headline/sch56.html

Source 7
http://books.google.com.sg/books?id=BH88kpvyrdYC&pg=PA280&lpg=PA280&dq=On+16+May,+1955,+over+2000+students+forced+their+way+into+Chung+Cheng+High+School+and+threatened+to+camp+there+until+the+government+abolished+the+%22+colonial+educational+policy%22+released+the+student+detainees,+and&source=bl&ots=IIvMqfVsPb&sig=BW7yNoWgSU7TPN4pr3T18ngd6w4&hl=en&sa=X&ei=BXr9U_OCK8-QuAS82IH4DQ&ved=0CCAQ6AEwAA#v=onepage&q=On%2016%20May%2C%201955%2C%20over%202000%20students%20forced%20their%20way%20into%20Chung%20Cheng%20High%20School%20and%20threatened%20to%20camp%20there%20until%20the%20government%20abolished%20the%20%22%20colonial%20educational%20policy%22%20released%20the%20student%20detainees%2C%20and&f=false
On 16 May, 1955, over 2000 students forced their way into Chung Cheng High School and threatened to camp there until the government abolished the " colonial educational policy" released the student detainees, and repealed the School Registration Ordiance.
Source 8
http://eresources.nlb.gov.sg/history/events/376486b7-a68b-4a2b-acad-97e0b678a8e7
On 10 October, Chew ordered 11 Chinese middle schools to expel 142 students and terminate the service of two teachers, while seven other teachers were issued warnings. In response, a group of about 1,000 Chinese High School students and 3,000 Chung Cheng High School students took over control of their schools, putting up anti-government posters and holding meetings with resolutions passed condemning the government’s action. Students from other Chinese middle schools and the Nanyang University also appeared to support the cause. On 12 October, Chew ordered the schools to close temporarily
