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Total Fees of B.Ed. in Maharshi Valmiki College of Education is INR 16,820 .
Eligibility Criteria for admission in B.Ed. -
Candidate must have completed Bachelors Degree/Masters Degree in Science / Social Science /Humanities/ Commerce or any other qualification equivalent
thereto with at least 50% marks in aggregate for general (45% marks for OBC and mere passing marks for SC/ST) Or B.E/B.Tech with minimum 55% marks and specialization in Science and Mathematics with at least 55% marks
And
The candidate will have to choose only one teaching subject within a subject category which she/he must have studied in the qualifying degree i.e., Bachelors Degree or
Masters Degree for at least 200 marks and obtained at least 50% marks in this subject.
Eligible candidates need to appear for the entrance test conducted by the Delhi University.
Final selection is based on the rank obtained in the entrance test and document verification at the time of admission.

There is no specific need for a group of subjects. Anyone from any stream can apply for this course of B.A psychology. It does not matter if you had psychology in 12th class or not, you will still be eligible to apply nonetheless.
However, it is advised that you should include psychology in 'Best Four Subjects'(BFS) if you had it as a subject in 12th. If you do not do so, you will face 'Deduction' of some percentage(2-3%) in your BFS%.
DU says that you must include that subject in your BFS, the course of which you are applying for as a major. For example, if you are applying for History(H), you must include History in BFS else face deduction.
All the best!