Diploma

Hi Somapika,
Here i am providing you some information regarding your search.May be it will helpful for you.
Below mentioned is a list of Primary Teacher's Training Institutes in West Bengal -
Banipur Govt. Primary Teacher's Training Institute Unit II, PO Banipur Distt. North 24 Paraganas 743233
Belakoba Govt. Primary Teacher's Training Institute Prasanna Nagar Distt. Jalpaiguri 735153
Berhampur Govt. Primary Teacher's Training Institute P.O. Berhampur Murshidabad Distt. 742101
Bibhuti Bhusan Govt. Primary Teacher's Training Institute P.O. Ghatbour Via-Bongaon North 24 Parganas Distt. 743235
Dharmada Government Primary Teachers Training Institute PO Dharmada Distt. Nadia 741138
District Institute of Education & Training P.O. Chhandar, Bankura Dt.
Govt. Primary T.T. Institute 44/1 Saheed Nalini Bagchi Road P.O. Berhampur, Murshidabad 74210
Govt. Primary Teacher's Training Institute Near Rail Gumti Cooch Behar Distt. 736101
Jalpaiguri Govt. Primary Teacher's Training Institute Shilpasamitipura Jalpaiguri Dt 735101
Kalimpong Govt. Primary Teacher's Training Institute PO. Kelomal Midnapore Dt. 721627
MD. Bazar Primary Teacher's Training Institute P.O. Md. Bazar Birbhum Distt. 731132
Prajnananda Govt. Primary Teacher's Training Institute P.O. Bara Jagulia, Nadia Dist. 741221
Ramakrishan Mission Ashram Primary Teacher's Training Institute P.O. Sargachhi Ashram Murshidabad Dt. 742134
Ramakrishna Mission Ashram Primary Teacher's Training Institute Unit II, P.O. Sarisha South 24 Parganas Distt. 743368
Ramakrishna Mission Boy's Home Primary Teacher's Training Institute PO Rahara Distt. North 24 Paraganas 743186
Sabrakone Govt. Primary Teacher's Training Institute PO Sabrakone Distt. Bankura 722149
Saroj Nalini Primary Teacher's Training Institute 23/1, Ballygunge Station Road Kolkata 700019
United Missionary Primary Teachers Training College 1, Ballygunge Circular Road Calcutta 700019

Since you have completed your +2 and is expecting good results, you are still doubtful about your JEE mains scores, you may look for alternatives to secure admission to a B tech degree programme. State level entrance examinations and examinations conducted by reputed deemed universities are worth trying. In case you fail to qualify for admissions to any B Tech programme, a diploma will make you eligible for lateral entry admissions direct to the second year of a B Tech/BE programme. This means that you should not hesitate to apply for a 3 year recognised Diploma in engineering offered by polytechnic colleges in your state. Again, you will have a diploma at hand that makes you eligible to apply for technician/supervisor level of posts in industries.