* Degrees Celsius or Fahrenheit? 38°C (90°F) is extremely hot and schools would likely be closed or dismiss early. 38°F (3°C) is quite cold, but schools usually remain open unless there are severe weather conditions or power outages.
* School policy: Individual schools and school districts have their own heat and cold weather policies. These policies might specify temperature thresholds for closures or early dismissals.
* Local conditions: Humidity plays a significant role. 38°C with high humidity is far more dangerous than 38°C with low humidity. Other factors like access to air conditioning in the school also impact the decision.
* Government mandates: In some areas, government agencies may issue heat warnings or advisories that lead to school closures.
In short, you need to know the temperature scale being used and check with the specific school or school district's policies to determine whether school will be in session.