Primary schooling has been compulsory since 1946; secondary education up to the age of sixteen was made compulsory in 1971. The state and the Church provide education free of charge, both running a number of schools in Malta and Gozo, including De La Salle College in Cospicua, St. Aloysius' College in Birkirkara, St. Paul's Missionary College in Rabat, Malta, St. Joseph's School in Blata l-Bajda and Saint Monica Girls' School in Mosta and Saint Augustine College, with its primary sector in Marsa and its secondary in Pieta. , state schools are organised into networks known as Colleges and incorporate kindergarten schools, primary and secondary schools. A number of private schools are run in Malta, including San Andrea School and San Anton School in the valley of L-Imselliet (l/o Mġarr), St. Martin's College in Swatar and St. Michael's School in San Ġwann. St. Catherine's High School, Pembroke offers an International Foundation Course for students wishing to learn English before entering mainstream education. , there are two international schools, Verdala International School and QSI Malta. The state pays a portion of the teachers' salary in Church schools.