The closures were a consequence of a regional haze crisis that blanketed parts of Southeast Asia, particularly Malaysia and Singapore, sending respiratory complaints soaring and fuelling diplomatic tensions.
In Malaysia's southernmost Johor state, face-to-face classes resumed in stages Monday after a 10-day suspension affecting more than 1,000 schools and about 600,000 students.
Johor education and information committee chairman Muhammad Naqib M…