The word endeavour (underlined in the 1st paragraph of text 1) is closest in meaning to:

Text 1

Structure of education in Singapore

The complete control and management of Singapore’s education is in the hands of the Ministry of Education (MOE). With continuous endeavour from MOE, today Singapore can be considered to have a strong and well-reputed education system. As per recent study Singapore is ranked fourth in terms of World’s Best Education System.

The preschools are run by the private sector, including religious bodies, community foundations, business groups, etc. However, every preschool need to register itself with the Singapore Ministry of Education before being functional.

After completion of 6 years of primary education, students have to appear for a Primary School Leaving Exam (PSLE). All those students who passed the exam are admitted in a secondary level course, which is usually completed in 4-5 years. It is similar to attending seventh grade through tenth grade in the American education system.

After completion of the secondary education, the students need to appear in Singaporean GCE ‘O’ Level exam. Based on the merit in that exam, students proceed to pre-university education, which is similar to attending eleventh grade and twelfth grade as per the American education system. At this level students can opt for a wide range of subjects from varied academic areas covering Humanities, Arts and Languages, Sciences and Mathematics streams.

www.singaporeeducation.info/Education-System/ Structure-of-Education