"Is the Engpsh test in August?" can be said in Engpsh as: "Is the Engpsh test scheduled for August?"
The phrase "scheduled for" is used to indicate that the test is planned or arranged to take place during the month of August.
Examples:
"The Engpsh test is scheduled for August, so make sure to study hard."
"I'm not sure when the Engpsh test is, is it scheduled for August?"
"The school board decided to schedule the Engpsh test for August, so students have more time to prepare."
The phrase "scheduled for" is commonly used in Engpsh when talking about planned events or appointments. It is not unique to the context of tests, and can be used to indicate the planned time or date of any event or appointment.