drawing on a line

[user_gary]

They may be co-educational schools in metropolitan Mumbai, but are still insisting drawing on a line that divides the boys from the girls.

Two schools in Mumbai issued notices this week asking girls and boys studying there not to touch or hug members of the opposite sex.

Vibgyor School and Jamnabai Nursery School have specifically forbidden boys and girls from touching or hugging members of the opposite sex in the school premises.
I wonder why `drawing on' and why not `drawing'.
Please explain the highlighed parts.

[bianca]

They may be co-educational schools in metropolitan Mumbai, but are still insisting drawing on a line that divides the boys from the girls.

Two schools in Mumbai issued notices this week asking girls and boys studying there not to touch or hug members of the opposite sex.

Vibgyor School and Jamnabai Nursery School have specifically forbidden boys and girls from touching or hugging members of the opposite sex in the school premises.
I wonder why `drawing on' and why not `drawing'.
Please explain the highlighed parts.

you have a point there. It should be: "there may be co-educational schools in...., but they are still insisting on drawing a line that divides (or between...)". So, the preposition 'on' was a little misplaced there...