Site performance

Hello,

I installed the theme and the XML test data. I find the site loading time a bit dissapointing…

If i compare the load time with the minicorp example:

https://tools.pingdom.com/fpt/#!/hy5Pz/https://themes.ishyoboy.com/?theme=minicorp-wp
It says: Your website is faster than 46% of all tested websites

But when i check my own website:

https://tools.pingdom.com/fpt/#!/b9JLXi/https://nieuw.rijschooldenk.nl/
It says: Your website is slower than 86% of all tested websites

Do you have a solution for this or can you give reasons why my page loads this slow?

Thanks in advance