Mature students who started secondary school in Ontario after September 1999, or mature students who are new to the Ontario system after February 1, 2004 may apply to have their prior learning assessed under the Ministry of Education's PLAR for Mature Students policy.  Students who started their secondary programs prior to September 1999 in Ontario, and return as mature students after February 1, 2004, may also choose to have their prior learning assessed under PLAR for Mature Students. Prior Learning Assessment and Recognition (PLAR) for Mature Students is the formal evaluation and credit-granting process through which mature students, who are enrolled in a secondary school course, may obtain credits for prior learning.  Mature students may obtain credits towards the Ontario Secondary School Diploma (OSSD) for knowledge and skills that they have acquired, in both formal and informal ways, outside secondary school.
The PLAR process involves:
a)  Grade 9 and 10 individual assessment/equivalency process
b)  Grade 11 and 12 equivalency process
c)  Grade 11 and 12 challenge process
In all cases, the knowledge and skills gained through education, work experience and training must be directly related to the provincial curriculum expectations. By using this process, mature students may be granted up to 26 credits towards their OSSD by the principal, depending on the number of credits the student already has.  Please note that a mature student can be brought to within 4 credits of the diploma using equivalent and challenged credits. In order to begin the PLAR process, you must complete a one page application and submit it along with an official school transcript to the principal. You must be enrolled in a full-time program at the Adult High School in order to have your documents assessed. A mature student is a student who is at least 18 years of age (i.e. an adult) on or before December 31st of the school year in which he or she returns to school, who was not enrolled in a day program for a period of at least one year.