NCF expects the standard variety to be acquired mainly through:

1. NCF says that by Class IV, if rich and interesting exposure is made available, the child will acquire the standard variety. 2. It also says the child will pick up the rules of correct orthography. 3. Correction, drills and tests are not named as the means. 4. So exposure does the work. **Why not the others:** Early correction, drills and dictation tests are form-focused methods, while the NCF names exposure as the means. _Source: NCERT, National Curriculum Framework 2005, section "3.1.2 Home/First language(s) or Mother-tongue education", PDF p. 57 (ncert.nic.in/pdf/nc-framework/nf2005-english.pdf)_