It's not the first time when teachers, parents and students feel embarrassed when surfing the internet. There all types of advertisements on the internet. They could delay the speed of the internet as well especially if it involves a moving advertisement. Is there a solution? Yes there is. When using Firefox as a browser, there is adblock plus (could be used in Chrome, Explorer, Opera as well). The link is here. It's just an extension where it is easily installed. Can block tracking, malware domains, banners, pop-ups and video ads - even on Facebook and YouTube.
Safety involves more. It's not just preventing unwanted ads from appearing on the screen, it's preventing other people from entering your pc and spying on your activity. There are several options. We are mentioning just some of them. One of them is self destructing cookies. It gets rid of a site's cookies and Local Storage as soon as you close its tabs. Protects against trackers and zombie-cookies. Trustworthy services can be white listed.
The site then ’knows’ that you have been there before, and in some cases, tailors what pops up on screen to take account of that fact. For instance, it can be helpful to vary content according to whether this is your first ever visit to a site – or your 71st.
Https everywhere encrypts the web. It makes the internet safer. Here is the link.