Sure it is, discriminating against intolerant symbols is a must.
Ombudsman says banning the hijab at school is discrimination
Published: 26 August 2014
Written by Czech News Agency

Sabatová stands up for Somali and Afghan girls who were banned from wearing their headscarves at a medical school in Prague
Prague, Aug. 26 (ČTK) — Czech ombudsman Anna Sabatová has stood up for the Somali student of a secondary medical school in Prague who has been forbidden to wear a headscarf at school, server Lidovky.cz has reported, referring to the ombudsman office’s internal document.
Muslim girls and women use the scarf, also called the hijab, to veil their hair and neck.
Sabatová says banning Muslims from wearing the hijab at school amounts to discrimination, the server writes.
The school argues its rules ban any headgear.