More than 150 pupils are allegedly crammed inside one classroom at one of the top performing schools in Limpopo's Sekhukhune district.

On Wednesday, parents from Mahwetse High School marched to the provincial department of education's offices in Polokwane to ask the government to resolve the overcrowding problem at the school.

The situation has been going on for the past 15 years. The school, with 836 pupils in just eight classrooms, is counted among the best in the Masemola education circuit in the Sekhukhune district.

The chairman of the school's governing body Louis Nchabeleng said one Grade 8 classroom had 156 pupils, while some classes have 127, 110 and 100 pupils.

Nchabeleng said pupils at the school were forced to learn under unbearable conditions, especially during summer when it gets hot which affected their concentration

He said pupils walked over desks to reach the back of the classroom as there was no space in between the furniture.

According to community leaders, the department built one block of classrooms when the school was opened in 1994.

Nchabeleng said the community had to build another block of classrooms through donations from parents because the department was failing to assist them. He said more parents were bringing their children to the school because of its track record of producing good results.

Last year, the school produced a 90% matric pass rate despite the conditions, while in some years it achieved a 100% pass rate for Grade 12.

Reading through the community's memorandum of demands, Lesheleba Bapela said parents were tired of watching their children being packed into classrooms "like sardines".

She said the issues of overcrowding at the school had been raised with the department since 1998.

The community has given the provincial department 14 working days to respond to their demands.

Spokesman for the provincial department, Naledzani Rasila, said they were aware of the urgency of the problems at the school and would work towards resolving them.