Spoke with Kyla. There is a setting in the wp config file called Alternate WP Cron that was set to true. I set it to false. It doesn't fix the links that are already created, but it should make it so that new links will not have the url changed. If you find any other pages that have the wp cron in the slug, you can remove them relatively easily. To get rid of the extra stuff in the slug, change the permalink for the page that it is showing on, update the page, then change it back. That should rewrite the permalink in the database.
https://ihm.diocesanweb.org/school/alumni/?doing_wp_cron=1597421660.2703349590301513671875
https://ihmparish.com/school/parent-information/hsa/?doing_wp_cron=1597422574.0723080635070800781250
Thanks!