Why does my content disapear when I make a page to match an archive name?

The WordPress template hierarchy is your friend.
https://developer.wordpress.org/themes/basics/template-hierarchy/

This provides a very detailed flow for how WP determines which template to load.

If you are ever uncertain about which template is loading, this little function is handy. Paste in your theme’s functions.php and it will display the template used at the bottom of the page. 

add_action('wp_footer', 'wpse_show_template');

function wpse_show_template() {
  global $template;
  print_r($template);
}

That being said, creating a page with the same slug (education) as your post type archive will produce unexpected results, as you’ve seen.

The proper way to add your static content to the Education archive is via the archive-education.php template.

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