Delhi and four NCR districts have mandated hybrid classes up to Class 5 under GRAP Stage III. The anti-pollution measures also restrict older vehicles and dust-generating construction activities. Schools in Delhi and five major NCR districts, including Noida, Ghaziabad, Gurugram, Faridabad and Sonipat have been directed to conduct classes up to Class 5 in hybrid mode until further orders, as authorities have implemented Stage III of the Graded Response Action Plan (GRAP).