Adding a new grade each year, the first graduation was held in 1974.
One new grade will be added in the 2008-09 and 2009-10.
After 1961 and for the next eight years, a new grade was added nearly every year.
The new grades have been added to the pages for all elementary and middle schools that were assessed this year.
Originally, there were only two grades, new and used.
The project raised much of central Chicago to a new grade.
Every year up until the 2008-09 school year, a new grade was added.
Struggling students should be promoted, she said, but given extra help in their new grade.
The school added a new grade each year as the classes graduated to the next level.
Heritage expanded by adding a new grade to the school each year.