The Sisters of the Holy Infant Jesus are also considering such re-structuring for their schools saying that they have "no intention to sell their land and buildings for redevelopment". The school year is divided into two semesters. The first begins in early January and ends in late May; the second begins in early June and ends in November. Ages may vary. After Pentaksiran Tingkatan Tiga (PT3) is introduced, student who failed their PT3 examination may proceed to Form 4. This is contrary to the previous system, where those who fail the Lower Secondary Examination (PMR) must retake the examination before proceeding to Form 4. Students usually spend six years in a Chinese Independent High School, which are only for secondary school students. The six years are divided into two stages: three years in junior middle and three years in senior middle, similar to the secondary school systems in mainland China and Taiwan. Students are streamed into tracks like Science or Art/Commerce in the senior middle stage. At the end of each stage, students sit for the Unified Examination Certificate (UEC). A few schools offer an additional year in senior middle, catering to students taking the government's Sijil Tinggi Pelajaran Malaysia (STPM, equivalent to A-level). Chinese independent high schools use the same academic year as government schools. An academic year consists of two semesters: Semester 1 from January to May and Semester 2 from June to November, with examinations at the end of each semester. The overall academic performance of a student in an academic year determines his/her promotion to the next study year in the next academic year. Failing requires repeating the study year. Usually, failing to be promoted for two years in a row results in a dismissal. In contrast, students in government schools are automatically promoted regardless of academic performance. There are many students who attend international schools in Malaysia. Typically, students either are enrolled in international schools from either Year 7 onwards, as the public education system for secondary school students is entirely in Bahasa Malaysia, whereas most Universities and Colleges conduct their lectures in the English Language. Many of these parents also wish for their children to pursue an international education in the future, and entering an English Medium environment enables students to be prepared for that. International schools in Malaysia follow various curriculums, such as the Cambridge International Curriculum (UK), Australian Curriculum (Western Australia), Canadian Curriculum (Ontario) and the IB Curriculum (Switzerland). Many students from International Schools enter University at the age of 17 due to the age arrangements.