School id cards

It would be trading. Supply of goods and services now is covered under GST.

Based on turnover, location - registration under GST would be required. 

Classification of ID cards (without magnetic strip) based on the ingredients used in ID card classification may fall (probably) under HSN 3920 (18%) or 4901 (5%). 

Credit would be eligible if registered under GST (purchase of goods, and ancillary like rent, etc.), and taxes charged could be claimed by customer. 

Hope this helps. 

we are planning to issue RFID cards to our school children.
whether, GST is applicable on those cards, even if they are issued to schools?