Ahmed, KV refers to Kendriya Vidyalaya and JNV refers to Jawahar Navoday Vidyalaya. KV and JNV students have a lesser application fees as compared to non KV or non JNV students for PRMO.
Also their state/ zone is not considered while declaring the results. Instead, the top 5% of KV/ JNV students from classes 8 to 11 and top 1% of students from class 12 are selected for RMO.
That is why in the school type column in the PRMO application form, the options are KV, JNV or others. Hope it helps.
IIT/JEE 2020 Online Preparation
Crack JEE 2020 with JEE Knockout Program, If you Do Not Qualify- Get 100% MONEY BACK