Ideology is the secret agenda behind the text that has been written, it is something that is wanted to be conveyed within a text but wanted to be done discretely but still noticeable.
Deyes high school are gradually becoming more modern with new buildings and more technology, examples of the technology would be the new ipads for english and media, the macs in media and the new computers in IT. The way that this could be conveyed could be through pictures of the old and new technology and buildings and compare them to each other.
Deyes high school care about their students, they want the best grades for their students and themselves. if they get the best grades dfor themselves they will get higher in the national league tables which will then get more pupils in in the future. To convey this in the newsletter i could put a graph on it of the grades that all of the students have achieved.
Deyes high school is a specialist science collage so they usually get the best science grades, to show this you could show pictures of pupils doing science experiments and a graph of science grades compared to other subjects.
Deyes high school is also a sporty school, they have alot of sports teams like football, rugby and netball. This could be shown through listing the teams in the newsletters and their next few games.
Deyes high school is also trying to be a healthy eating school, this could be shown through pupils without lucazades and unheathly foods.
Some staff at deyes high school do more than they have to to help the students get the best grades that they can, they will put on revision sessions after schools and help in lunchtime and breaks. for this you could show a timetable on the newsletter of all the revision sessions before the next set of exams.
This a picture of the dalmation from google before i have tried to edit it on photoshop. 
