Is entry to the German education system level known as Gymnasium considered a fair process for students?

I am undertaking some research for my daughter into the german education system, and could do with some feedback from anyone on how entry to this level within the German education system is thought of? Is it considered a fair process?

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).