What is a good 11 plus score?

What's a standardised age score?

Many selective schools use standardised scoring in their entry process. This includes schools using GL Assessment 11 plus papers, the CAT4 and the ISEB Common Pre-Test.

Standardisation is a way to remove variables from test scores to compare results fairly. Children's raw scores (their total number of marks) are converted into standardised age scores (SAS) to make sure they aren't disadvantaged based on when they were born in the year.

Why are scores age standardised?

Two children in the same school year can be almost 12 months apart in age, giving the older child a big advantage. To balance this out and even their chances, younger pupils are given extra marks.

For example, children are exposed to more than 1,000 new words a year. The children born in September will have had a much larger opportunity to develop their vocabulary than those born in August.

Concerned that your autumn-born child will have marks taken off them? Don't worry, they won’t. Younger children can gain marks, but older children will never lose marks.

How is a standardised age score calculated?

Each child’s SAS is calculated from:

• The number of questions they answered correctly
• The difficulty of the questions they answered
• Their age in years and months (e.g. 10 years and 9 months)

1. Attainment estimate

The first step in calculating an SAS is to work out an attainment estimate. This takes into account both the number of questions answered correctly and the difficulty of each question they answered correctly.

2. Age standardisation

Next, these scores are adjusted based on the child's age at the time they sit the exam. For example, let's say a child with a September birthday and a child with an August birthday both achieve a raw score of 100. The older child may end up with an SAS of 118, and the younger may be given an SAS of 121.

3. Stanine placement

After standardising , pupils' scores are placed on a stanine curve. This represents a scale of 1 (low) to 9 (high), where 5 represents the average for that child's age. The stanine can give a broad overview of performance at an individual and year-group level.

What is a good SAS on the 11 plus?

• 120 or above is the top 10% of the year group
• 100 is average for the year group
• 80 or below is the lowest 10% of the year group

The highest SAS a child can achieve is usually 142. This would place them in the top 1% of children taking the test. The lowest SAS is usually 60.

11 plus mock tests on Atom show your child's SAS after every practice, so you can track how they're progressing against these benchmarks over time.

What is the 11 plus pass mark?

Some grammar schools and grammar school consortiums set a pass mark – or 'qualifying mark' - for their 11 plus exams, but this isn't consistent across the country. Many schools rank the SAS of every child who took the test from highest to lowest. They then offer places to a set number of the highest-scoring pupils (e.g. the 180 children with the highest scores).

Achieving the pass mark does not guarantee an offer of a place. For entry to grammar schools, it simply means that you can list the school as a preference on your common application form. Other admissions criteria is always taken into account when offering places – such as whether a child lives within a certain catchment area, if they are in public care or previously in public care, or qualify for free school meals.

Some grammar school consortiums do have set pass marks, or have provided historic qualifying marks:

What 11 plus score should my child aim for?

By the time your child is ready to sit the eleven plus, they should be achieving an SAS of at least 115. For more competitive grammar or independent schools, aim for an SAS of 120 and above. 11 plus practice papers are a useful way to see how your child is likely to perform on the real exam at their current level of knowledge.

Your child's SAS is a helpful indicator of their progress, as it is the same scoring system used in the real exam. Keeping an eye on how it develops will give you insights into how quickly they are improving, as well as highlighting subtopics that need more practice.

With Atom Home, you can set your child 11 plus test papers that replicate real exams used by grammar schools across the UK. Atom's online mock tests are automatically-marked, giving you instant data on your child's progress. This includes:

• Your child's standardised age score

• An indication of their time management (questions attempted, time taken, and average time per question)

• A breakdown of their ability in all tested subtopics

Plus, use Atom's smart algorithm to quickly set your child a practice in areas they found challenging!