Feel free to use my own template in Google Sheets: Google Dashboard for School Administrators. The icons are generic, so your titles can be easily renamed. Every part of this file can be edited to fit your own school. If you love the idea, please create one for your staff too. This particular document is for all the admin in the district to access, but you can create one for teachers too. The Google Dashboard for School Administrators link will ask you to make a copy. This will protect my own file and protect you from sharing your files with the rest of the world to see if you accidentally start to fill my document with your own links.
Enter the website text you wish to have quick access to. For example, District Calendar. Select the words to hyperlink. "District Calendar" is selected. Now click the hyperlink symbol.