Understanding AQA GCSE Combined Science Extension Tier: Grades 9-9 to 4-4 Explained | 解读AQA综合科学扩展层：9-9至4-4评分体系详解

📚 Understanding AQA GCSE Combined Science Extension Tier: Grades 9-9 to 4-4 Explained | 解读AQA综合科学扩展层：9-9至4-4评分体系详解

The AQA GCSE Combined Science: Trilogy specification is one of the most widely studied science qualifications in England. Its Extension Tier (often called the Higher Tier) offers students a rich range of target grades, from 9-9 down to 4-4, each occupying a different “width” of the mark scale. Understanding exactly how this grading system works is essential for students, parents, and teachers who want to set realistic targets and interpret results with confidence.

AQA GCSE综合科学（Trilogy）是英格兰学习人数最多的科学资格证书之一。其扩展层（通常称为高级层）为学生提供了从9-9到4-4的丰富目标等级范围，每个等级在分数标尺上占据不同的”宽度”。准确理解这一评分体系的运作方式，对学生、家长和教师制定现实目标并自信解读成绩至关重要。

1. What Is the Extension Tier in AQA Combined Science? | 什么是AQA综合科学的扩展层？

The AQA GCSE Combined Science: Trilogy is a “double award” qualification: it counts as two GCSEs and is taught across Biology, Chemistry and Physics. Students sit six exam papers (two per science), each worth 70 marks, giving a total of 420 marks.

AQA GCSE综合科学（Trilogy）是一项”双证书”资格：它相当于两门GCSE，教学内容涵盖生物、化学和物理。学生需要参加六份试卷（每门科学两卷），每卷70分，总计420分。

Candidates sit either the Foundation Tier or the Extension (Higher) Tier. The Extension Tier is designed to test students across the full ability range of the grade 4 to 9 spectrum, and it permits access to the highest grades available at GCSE.

考生可以选择参加基础层或扩展层（高级层）。扩展层旨在考查4至9年级整个能力范围内的学生，并允许考生获得GCSE可获得的最高等级。

On the Extension Tier, the highest possible outcome is 9-9 and the lowest is 4-4. If a candidate’s performance falls below the 4-4 threshold, they receive a U (ungraded) — a crucial feature that many students discover only when results day arrives.

在扩展层中，最高可能成绩是9-9，最低是4-4。如果考生的表现低于4-4的分数线，他们将获得U（未评级）——这是许多学生直到成绩公布日才发现的关键特征。

2. The Six Target Grades: From 9-9 to 4-4 | 六个目标等级：从9-9到4-4

AQA’s Extension Tier “targets” six principal double grades: 9-9, 8-8, 7-7, 6-6, 5-5 and 4-4. Between each pair, the awarding system also recognises intermediate “split” grades such as 9-8, 8-7, 7-6, 6-5 and 5-4, which reward students who sit near a boundary.

AQA扩展层”瞄准”六个主要的双等级：9-9、8-8、7-7、6-6、5-5和4-4。在每对等级之间，评分系统还会认可中间的”拆分”等级，如9-8、8-7、7-6、6-5和5-4，以奖励接近分数线的学生。

Thus the full higher-tier grade ladder is:

因此，完整的高级层等级阶梯为：

9-9 → 9-8 → 8-8 → 8-7 → 7-7 → 7-6 → 6-6 → 6-5 → 5-5 → 5-4 → 4-4

This gives eleven possible outcomes in total. The “six target grades” in the specification’s language refers to the six integer double grades; the split grades are officially described as “allowed” grades rather than separately targeted ones. This distinction matters when teachers set predicted grades and when examiners construct mark boundaries.

总共有十一种可能的结果。教学大纲中所说的”六个目标等级”指的是六个整数双等级；拆分等级在官方描述中被列为”允许的”等级，而非单独”目标”的等级。这一区别在教师给出预估成绩和考官划定分数线时非常重要。

3. What Does “Different Widths” Really Mean? | “不同宽度”究竟意味着什么？

When AQA says the six target grades cover 9-9 to 4-4 “at different widths”, it refers to the fact that each grade occupies a different range, or width, of raw marks. These widths

Published by TutorHao | A-Level Science Revision Series | aleveler.com

更多咨询请联系16621398022（同微信）