To be eligible for JEE Main 2019, candidates need to qualify in any of the following exams:

• Class XII or any other equivalent exam conducted by any recognized Central/ State board like CBSE, ICSE, Council for the Indian School Certificate Examinations, New Delhi etc.

• Intermediate or Pre-University Course or Pre-Degree Course examination conducted by a recognized Board/ University.

• Final examination of the 2-year course of the Joint Services Wing of the National Defence Academy.

• Vocational examination of H.S.C.

• National Institute of Open Schooling conducted Senior Secondary School Examination with a minimum of 5 subjects.

  Recommended

• AICTE or State board of technical education recognised Diploma of at least 3 years duration.

• Association of Indian Universities (AIU) recognised school, board, university examination in India or in any foreign country recognized as equivalent to the 10+2 system.

• General Certificate Education (GCE) exam (London/ Cambridge/ Sri Lanka) at Advanced (A) level. This is only for admission to IITs.

• High School Certificate Examination by Cambridge University or International Baccalaureate Diploma of the International Baccalaureate Office. This is also for admission to IITs.

https://engineering.careers360.com/articles/jee-main-eligibility-criteria

Visit this link for more details