when i was teaching i was paid over 12 months. my salary per month was less, but my overall salary was the same. maybe that is what happened where you were teaching- they spread it out a little more thinly.
im not sure what schools you are refering to that have 10 days of vacation. im not saying youre wrong, because im sure you heard it somewhere, but ive never heard of such a thing. i always had 5 days at most, including shabbos and sunday.
why do you feel the need to pressure yourself into vacations or trips that you cant afford? better that you should stretch yourself thin than for you to say “no kids, im sorry, we just cant do that this year, so lets think of something really fun and exciting that we can do together as a family.” let everyone in the class think you are the poorest, its got to be someone. reality is that you dont want people thinking that about you. you can say its about your kids, but they have to have picked up the attitude from somewhere. yes, kids make fun of others, and if its not one thing its another. if they want to they will make fun of the richest kid in the class too…..thats kids, and theres not much you can do about it except to teach your kids that it doesnt really matter if other people think they are rich or poor, and it doesnt really matter where other people went or what they did or how they live.