Ok Google Go to "Blank" Is there a way to navigate to locations using Ok Google?

Similar functionality on the iPhone would be "Go Home."
Make sure you have the latest supported language pack. (You can get in-app updates)

Assuming you already have Google maps installed;

Set your custom address (e.g school)


On your Android phone or tablet, open the Google Maps.
Tap Menu Menu and then Your places and then Labeled.
Choose Home or Work (school).
Enter the address.


Note: You must be signed in to set, edit, and see your home and work on the map

Use voice search and navigation commands


Open the Google Maps app
Say “Ok Google” or tap Speak.
Ask a question or tell Maps to do something e.g "Ok, Google. "Get directions to [school]." Alternatively, "Navigate to school."


Edit

If someone's address is in your Google Contacts, you can find their address on the map by searching for their name. If you search for an address, you can see any contacts matching that address.

If you wish to add or manage your google contacts, navigate to Google contacts.

Adding an address to a Google contact


Open the Google Maps app .  
Search for an address.
At the bottom, tap the address.
Tap Label.
Enter the name of someone in your Google Contacts. To create a new contact, tap Create contact.
Choose an option: 


Add home: Add the address as your contact's home address.
Add work: Add the address as your contact's work address.
Add custom label: Make a new label for your contact's address, like "Friend's house."



Note: Only people stored in your Google Contacts will show up as suggestions. You won't see contact info for people who are stored on your phone or tablet.

Credits


Find, add, or hide your Google Contacts on the map