We check this website, now skolaonline.cz is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is skolaonline Down Right Now? - NO! skolaonline is up!
If you have problem with access to site skolaonline, and domain skolaonline.cz is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).