Try keeping your number of pages low in the menu area by creating pages that can categorize other pages. For example, in the Classroom Website Template, the Areas of Study page leads to a drop down of all the subjects. If you want more pages, see if they fit under a category.
Think of it like accessing a computer desktop with many items. You do not want all your images and documents to clutter your desktop (website menu). Instead, create a few folders (main pages) that point to where the files (other pages) are organized.
It's tempting to put all your Google Slides and Docs into the webpage. Embedding can be helpful because it lets the visitor access the video or file directly from the webpage, but try not to use it too much or it will crowd your space.
Before you read a book, the format helps to prepare your mind for reading. You look at the book cover and title, chapter numbers, headings, and page numbers help you keep track of the reading. The fonts and images will likely be consistent and predictable. A website is similar in that the visitor needs consistent formats. If you use certain sizes for text, headings, images, videos, etc., then make that consistent throughout.
At Meet-the-Teacher, Back-to-School, or other early events, give parents your website address and encourage them to bookmark it on their browser. You can include this in a flyer, bulletin board, or business card. Try to make a point of sending a mass-email once a month and encourage parents to visit your class website for more information about what is happening in school and how they can help their child be successful.
Parents will use your website if you update it regularly and direct them to it as a resource. One simple way is to provide a regular digital newsletter weekly, bi-weekly, or monthly and informing parents to find it on your site. You can also explain that you prefer to go paperless and will provide forms and information online.
Don't you hate going to a website and having to sift through all the content in order to find what you need? You should delete extraneous things, or if you want to keep certain files, store them safely in your Google Drive to link to in another school year.
Google Sites are adaptive for the most part, but every once in a while you'll find that a word might be too large for Googe Sites to adapt to the screen, so check your website on different devices and browsers before sending it out.
Don't assume that the principal will go through your portfolio, so try to advertise it on all your professional communication such as in your email signature, resume, or cover letter.
Check that you can display your portfolio to the interview committee. If you can't, then bring a tablet or laptop just in case.