Here are some universal ballet guidelines for most classes around the globe that are very helpful for wherever you take ballet class.

1STUDENTS NEED TO ARRIVE NO EARLIER THAN 15 MINUTES BEFORE CLASS.
2STUDENTS NEED TO ARRIVE NO LATER THAN 15 MINUTES AFTER CLASS HAS BEGUN. FOR YOUR SAFETY, IF YOU ARE MORE THAN 15 MINUTES LATE FOR CLASS, YOU WILL NOT BE ALLOWED TO PARTICIPATE.
3IF ARRIVING LATE OR COMING BACK FROM THE RESTROOM, PLEASE DO NOT ENTER CLASS DURING A COMBINATION.  WAIT UNTIL THE COMBINATION HAS FINISHED AND THEN ENTER BACK INTO CLASS.  PLEASE BE SURE THAT SHOES ARE ON AND YOU ARE READY FOR CLASS WHEN PLACING YOURSELF AT BARRE.
4PLEASE WAIT UNTIL CLASSES HAVE FINISHED BEFORE ENTERING FOR THE NEXT CLASS.
5PLEASE DO NOT SIT AT ANY TIME DURING CLASS.
6ALL CELL PHONES SHOULD BE ON SILENT DURING CLASS.
7MASKS ARE OPTIONAL.
8BALLET SLIPPERS ARE HIGHLY RECOMMENDED FOR TAKING CLASS.
9PLEASE WEAR SOCKS AT YOUR OWN RISK, AS MARLEY FLOOR CAN BE SLIPPERY.
10PLEASE BE SURE TO WEAR DEODORANT AND CLEAN WORKOUT GEAR.
11PLEASE AVOID ANY HEAVY PERFUMES, OILS, OR DEODORANTS WHEN TAKE CLASS, AS OTHER STUDENTS MAY BE ALLERGIC AND OILS CAN MAKE THE FLOOR SLIPPERY.
12PLEASE AVOID TALKING DURING CLASS, AS ACOUSTICS IN THE STUDIO CARRY LOUDLY.
13PLEASE TALK SOFTLY WHILE IN THE LOBBY AS VOICES CARRY INTO THE STUDIO.
14PLEASE BE AWARE THAT PHOTOS OR VIDEO MAY BE TAKEN DURING THE COURSE OF CLASS FOR ADVERTISING PURPOSES.
15YOU MAY VIDEO ONLY YOURSELF DURING CLASS, BUT PLEASE DO NOT LET IT DISRUPT CLASS AND IT SHOULD NEVER BE POSTED ONLINE.
16PLEASE AVOID GIVING CORRECTIONS TO FELLOW DANCERS, AS IT IS CONSIDERED RUDE.
17ALWAYS REMEMBER THAT MORE EXPERIENCED OR KNOWLEDGABLE DANCERS SHOULD BE IN THE FRONT WHILE PLACED IN CENTRE AND GOING ACROSS THE FLOOR. TEACHER WILL TYPICALLY PLACE STUDENTS IN CENTRE.
18PLEASE REMEMBER THAT PROPER PLACEMENT AT BARRE IS IMPORTANT WHEN MORE THAN ONE STUDENT IS AT BARRE.
19IF YOU ENJOYED THE CLASS IT IS ALWAYS POLITE TO CLAP FOR THE TEACHER & PIANIST AFTER REVERENCE.