Backpacks, hooded sweatshirts, and even bottled water have been banned at some schools.Even seemingly innocent things like the dictionary and the game of tag have been banned.It's not always a security measuresometimes, it's about protecting students' feelings or making it harder for them to smuggle in cell phones.School is almost back in session, and it's a good time for students and parents to review what they're allowed and not allowed to bring onto campus.The list of things that have been banned at schools contains some pretty unexpected items. Depending on where you live, hooded sweatshirts, bottled water, and backpacks may be off limits. Even the dictionary was briefly banned at one California elementary school.Read on to see some of the strangest things that have been banned from schools over the years.SEE ALSO:A professor in Ohio takes attendance on Twitter, posts homework on Slack, and holds office hours at 10 p.m. ' and it shows how different Gen Z really isDON'T MISS:An elite private school that costs $60,000 a year is at the center of the political world right now thanks to alums Brett Kavanaugh and Neil Gorsuch ' take a look insideRed inkSchoolteachers have used the dreaded ren pen to mark up their students' mistakes for generations.The sight of red ink became so jarring that several schools in England banned teachers from using it in the 2000s. Many of them hoped that by forcing teachers to make their corrections in other colors, it would soften the stigma of making a mistake.He continued: "Red pen can be quite de-motivating for children," Richard Sammonds, the head teacher at Kent Junior School in England, told The Telegraph in 2008. "It has negative, old school connotations of 'See me' and 'Not good enough.'""We are no longer producing clerks and bookkeepers. We are trying to provide an education for children coming into the workforce in the 21st century."Ugg bootsNowadays, cell phones are far too common for most schools to effectively ban them.But back in 2012, many schools were trying their best to prevent their students from accessing their mobile devices. One Pennsylvania school went so far as to ban Ugg boots on campus because too many students were using them to secretly store their phones.Naturally, the ban drew a strong backlash from students and parents."If a middle school student is determined enough to have their cell phone on them, believe me they will regardless of the shoes they are wearing," one parent wrote on Facebook after the ban was announced.BackpacksBackpacks are a quintessential school supply, but many schools in the United States are giving them the axe.Some schools in Iowa and Illinois banned backpacks during school hours because of the amount of space they take up in the class and the congestion they cause in hallways.Other schools have cited safety concerns due to the rise in school shootings, and have either banned backpacks outright or required students to use school-issued clear backpacks.See the rest of the story at Business Insider Click here to read full news..