Pupils over 16 must still test every 14 days to enter school or take a school bus, while those over-16 with a medical exemption from vaccination need to undergo weekly testing, a circular from schools to parents across the city said.
Over-16s must also present a green Al Hosn app status to enter school premises.
Thousands of Abu Dhabi pupils returned to classrooms on January 31 for the first time this year, as a phased return to in-person learning was completed.
This comes as cases continue to drop in the UAE and more rules are lifted, amid a cautious return to normality.
Cinemas, shopping malls and other entertainment spots and venues across the UAE have been allowed to return to full capacity.
Restrictions were first announced in early 2020, when the pandemic began. However, people must still wear a mask in indoor and outdoor public places.