teaching swimming sux

wah liao... today teach swimming to small kids and it sux to the max lor...first hour was ok... not so bad.... but when the second hour comes...the nightmare started.....suppose to have 4 students.. 2 breaststroke and 2 backstroke. then comes 2 make up students for breaststroke and 2 transfer for backstroke....and teaching 8 students at a time is really damn freaking hard.... and there are so many eyes looking at you....including parents of the students.... really stress really suxs.....so in order to make up for all the students waiting for me to teach... i end class 15 to 20 minutes later....really SUXSssssSSS....haiyah...feel like quiting teaching already....