The first amendment does relate closely to the pledge of allegiance.The pledge of allegiance has to do with freedom of speech and so does the first amendment.The pledge could not exist without the rights guaranteed by by the first amendment.The pledge also mentions God,which is also a right discussed in the first amendment.
Since the pledge of allegiance is something that is spoken, it is covered under the first amendment as freedom as speech. People should be allowed to choose whether or not they say the pledge, and how they say it. If they don't want to say "under God," which was added during the Red Scare and was not part of the original pledge anyways, then they shouldn't have to.
THE PLEDGE IS ONLY 31 WORDS THAT ANYBODY CAN SAY WITH COMPLETE EASE. JUST STAND UP AND RECITE THE PLEDGE THEN SIT BACK DOWN. IT ISNT THAT HARD. EVERYBODY HERE IS JUST SOOO LAZY . GUT OFF YO BUTTS AND RESPECT OUR COUNTRY!!!! No seriously its really not hard at all.