TELL YOU WHEN. COMING UP. >> WELL, ALL THAT HIGH HEAT IS SHIFTING SCHEDULES FOR STUDENTS AND FAMILIES AS MANY KIDS MARKED THEIR FIRST WEEK BACK TO SCHOOL. 7 NEWS DETROIT REPORTER BRETT KAST IS BREAKING DOWN. WHAT'S DRIVING THE CHANGES AND THE CHALLENGE IS ON THE WAY. BRETT? >> THESE WELCOME BACK TO LOSE. THAT SCHOOL IS BACK IN SESSION HERE IN SOUTHFIELD THIS FIRST WEEK. MAYBE A BIT SHORTER THAN EXPECTED WITH SCHOOL CLOSED TOMORROW. >> JUST TODAY IT'S A BIG WEEK FOR 14 YEAR-OLD MARIANNA KING STARTING HER LAST YEAR OF MIDDLE SCHOOL AND BERNIE IN SOUTHFIELD. BUT HER FIRST WEEK BACK PUT ON PAUSE LATE THIS EVENING WITH CLASS SUDDENLY CANCELED TUESDAY. WELL, REALLY WANT TO GO BACK SCHOOL NOT NOW GUY DAY WITHOUT SCHOOL DISTRICT CANCELED ALL CLASSES AND AFTER-SCHOOL ACTIVITIES DUE TO EXCESSIVE HEAT. >> WITH THE HEAT INDEX EXPECTED TO REACH OVER 100 DEGREES. TO ME THE CLASSES ARE COLE IS LIVE. A REAL CALLS ALONG GET ABOUT MARIANNA SAYS HER SCHOOL HAS A SEE OTHER DISTRICTS LIKE EAST POINT AND A TREE ARE ALSO MAKING CHANGES DUE TO THE HEAT. MOVING TO AN EARLY DISMISSAL ON TUESDAY. >> DETROIT SUPERINTENDENT DOCTOR NIKOLAI VITTI SAYS MANY OF THEIR SCHOOLS DON'T HAVE AC. >> ABOUT 50% HAVE AIR CONDITIONING AND THE NEXT 5 YEARS, ALL BUT 10 WILL HAVE AIR CONDITIONING. SO JUST EXCITED TO MAKE THIS INVESTMENT. I THINK ABOUT WHEN I WAS GOVERNOR, WE WENT TO SCHOOL. WEATHER WAS HATTER COALS, JUST TRYING TO THINK ABOUT THINGS HAVE CHANGED. BUT JUST BECAUSE THAT WERE FUNNY. >> DOESN'T MEAN THAT THE CASE SHOULD HAVE TO BE, YOU KNOW, HAD A SCHOOL'S PARENTS LIKE MEGAN THE LAST MINUTE CHANGES ARE AN INCONVENIENCE WHILE HER KIDS GO TO A CHARTER SCHOOL IN DETROIT. >> SHIELDS THOSE INVESTMENTS SEE HAPPEN QUICK. I JUST HOPE SCHOOLS ARE REALLY CONSIDER THEM THE LEARNING ENVIRONMENT. AND, YOU KNOW, IT IS IMPORTANT. MAKE SURE THAT WE HAVE THE THE BOILERS INTACT, YOUR CONDITION WORKING. >> YOU KNOW, SO THESE KIDS CAN BE ABLE ATTEND SCHOOL AND THE TEACHERS CAN TO GET THEIR JOB. THEN YOU DON'T THINK THAT WHEN THEY NEEDED TO CLOSE THIS, IN YOUR OPINION, NOT REALLY. BUT I UNDERSTAND FOR THE KIDS WALKING BACK AND FORTH ON MARIANNA IS LOOKING FORWARD TO HER FIRST WEEK. SHE'LL HAVE TO WAIT YET ANOTHER DAY. >> SUMMER BREAK MAY BE OVER, BUT THE SUMMER HEAT ISN'T GOING ANYWHERE. MOST MY FRIENDS PROBABLY WAS. I WE JUST GOT BACK AND WE JUST SEEING OUR FRIENDS STUFF LIKE THAT. SO >> A SCHOOL A SCHOOL IS THE HEAT. >> A FULL LIST OF SCHOOL CLOSURES ON OUR WEBSITE. WX Y Z DOT COM IN SOUTHFIELD. I'M BRED CAST 7 NEWS DETROIT. >> DETROIT AND W X