The following statement is from a school's policy on the PTS Sem 1 examination: 'The PTS Sem 1 examination is a compulsory assessment for all students. It is designed to evaluate their knowledge, skills, and application of concepts learned during the first semester. The examination results will be used to inform instruction and guide student learning for the remainder of the academic year.'What is the purpose of the PTS Sem 1 examination according to the school's policy?