Is it a correct use of "in case" ?
As some special disease require consuming specific nutrients or avoiding some ,thus some students might be on a diet and school cannot prepare specific food for each student so they should have this possibility to bring food from home in case to be healthy

Question

Is it a correct use of "in case" ?
As some special disease require consuming specific nutrients or avoiding some ,thus some students might be on a diet and school cannot prepare  specific food for each student  so they should have this possibility to bring food from home in case to be healthy

Answer

Hello, Narges,

In this case "in order to stay healthy" would be better than "in case to be healthy".

A few other suggestions...As some special diseases require either consuming or avoiding specific nutrients, some students might be on a diet. Because the school cannot prepare specific food for each student,  the students should be able to bring food from home in order to stay healthy.
 
best,
 Martha