71%
GCSE 9–4 · 2024/25
45%
GCSE 5+ · 2024/25
46.6
Attainment 8 · 2024/25
57%
EBacc entry · 2024/25
601.2
EBacc APS · 2024/25
918
Pupils · 2024/25
11%
EAL · 2024/25
25%
Persistent abs. · 2024/25
Ofsted inspection
Good
Ofsted inspection · 14/03/2024
Inadequate
Requires improvement
Good
Outstanding
Local authorityNorfolk
PhaseSecondary with sixth form with sixth form
School typeAcademy
Pupil : teacher ratio15.9:1
AdmissionsNon-selective
Religious characterDoes not apply
StatusOpen
Overview of Diss High School · Secondary with sixth form · Norfolk
Part ofENRICH LEARNING TRUST
How does this school perform?
Key Stage 4 · 2024/25 · trend since 2016/17
GCSE 9–4 incl. Eng & maths
71%
+4pp
74%71%67%
'19'22'23'24'25
'25 · 71%
GCSE 5+ incl. Eng & maths
45%
+4pp
51%46%41%
'19'22'23'24'25
'25 · 45%
Attainment 8
46.6
+2.3
49.146.744.3
'19'22'23'24'25
'25 · 46.6
EBacc entry
57%
+4pp
78%66%53%
'19'22'23'24'25
'25 · 57%
EBacc APS
601.2
+37.8
685.3624.4563.5
'19'22'23'24'25
'25 · 601.2
Sixth form
Key Stage 5 · 2024/25 · trend since 2016/17
A-level APS
30.7
-0.9
35.832.429.1
'19'22'23'24'25
'25 · 30.7
A-level value added
-0.01
0
0.00.0-0.1
'17'18'19'24'25
'25 · 0.0
AAB+ in facilitating subjects
6%
-6pp
23%15%7%
'19'22'23'24'25
'25 · 7%
Average A-level grade
C
0
B-C+C
'19'22'23'24'25
'25 · C
Pupils & context
2024/25
Pupils on roll
918
Pupil : teacher ratio
15.9
Workforce data · 2025/26
EAL
11%
FSM eligible
25%
SEN
11%
Overall absence
10%
Persistent absence
25%
Contact
Address
Walcot Road, Diss, IP22 4DH
Local authority
Norfolk
Telephone
Email
—
History
All years · Historical DfE data by academic year
Secondary — Key Stage 4
GCSE attainment and Progress 8 — how pupils progressed from KS2 to KS4.
| Year | GCSE 9–4 | GCSE 5+ | Attainment 8 | Progress 8 | EBacc entry | EBacc APS | EBacc lang entry | Cohort |
|---|---|---|---|---|---|---|---|---|
| 2024/25 | 71% | 45% | 46.6 | Not applicable | 57% | 601.2 | 58% | 918 |
| 2023/24 | 67% | 41% | 44.3 | -0.08 | 53% | 563.5 | 53% | 941 |
| 2022/23 | 67% | 46% | 45.4 | -0.06 | 64% | 637.8 | 65% | 948 |
| 2021/22 | 74% | 51% | 48.3 | -0.20 | 63% | 569.1 | 64% | 919 |
| 2018/19 | 72% | 44% | 49.1 | -0.02 | 78% | 685.3 | 78% | 963 |
| 2017/18 | 64% | 42% | 48.3 | +0.26 | 86% | 590.5 | 86% | 880 |
| 2016/17 | 71% | 49% | 51.9 | +0.12 | 80% | — | 81% | 926 |
Sixth form — Key Stage 5
| Year | A-level APS | Avg grade | VA progress | AAB+ | Cohort |
|---|---|---|---|---|---|
| 2024/25 | 30.7 | C | -0.01 | 6% | 76 |
| 2023/24 | 31.6 | C | +0.02 | 13% | 80 |
| 2022/23 | 29.1 | C | — | 12% | 65 |
| 2021/22 | 35.8 | B- | — | 16% | 109 |
| 2018/19 | 35.2 | B- | +0.03 | 23% | 71 |
| 2017/18 | 30.5 | C | -0.14 | 12% | 93 |
| 2016/17 | 31.5 | C | +0.05 | 7% | 108 |
Pupils & absence
| Year | Pupils | Pupil:teacher | SEN | EAL | FSM ever | Absence | Persistent absence |
|---|---|---|---|---|---|---|---|
| 2024/25 | 918 | 15.9 | 11% | 11% | 25% | 10% | 25% |
| 2023/24 | 941 | 17.0 | 15% | 10% | 24% | 10% | 30% |
| 2022/23 | 948 | 16.6 | 9% | 9% | 21% | 7% | 17% |
| 2021/22 | 919 | 17.7 | 7% | 8% | 19% | 7% | 18% |
| 2020/21 | 933 | 17.8 | 12% | 8% | 15% | — | — |
| 2018/19 | 963 | 17.7 | 8% | 6% | 19% | 4% | 9% |
| 2017/18 | 880 | 15.7 | 8% | 6% | 20% | 4% | 8% |
| 2016/17 | 926 | 15.6 | 6% | 5% | 19% | 3% | 4% |
School performance data © Crown copyright. Source: Department for Education.