Let’s look at the first two paragraphs of my model answer for the task below.
The table below gives information about the problems faced by children in two primary schools in 2005 and 2015.
Introduction: paraphrase the question statement
The table compares two primary schools in terms of the proportions of their pupils who experienced seven different educational problems in the years 2005 and 2015.
Overview: describe two main or general points
It is noticeable that school A had higher proportions of children with all seven educational difficulties in both years. However, while school A managed to reduce the incidence of most of the problems between 2005 and 2015, school B saw an overall rise in the percentage of children who were struggling.