Here's my full answer for the task below.
The diagrams below show the site of a school in 2004 and the plan for changes to the school site in 2024.
(Source: Official IELTS Practice Materials 2)
The two pictures compare the layout of a school as it was in the year 2004 with a proposed site design for the year 2024.
It is clear that the main change for 2024 involves the addition of a new school building. The school will then be able to accommodate a considerably larger number of students.
In 2004, there were 600 pupils attending the school, and the two school buildings were separated by a path running from the main entrance to the sports field. By 2024, it is expected that there will be 1000 pupils, and a third building will have been constructed. Furthermore, the plan is to join the two original buildings together, creating a shorter path that links the buildings only.
As the third building and a second car park will be built on the site of the original sports field, a new, smaller sports field will need to be laid. A new road will also be built from the main entrance to the second car park. Finally, no changes will be made to the main entrance and original car park.
(183 words, band 9)