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Common Aggregation Hierarchy

"The Common Aggregation Hierarchy (CAH) provides a standardised hierarchical aggregation (grouping) of subject codes and terms (developed based upon the HECoS codes and terms) suitable for the majority of uses."

See https://www.hesa.ac.uk/support/documentation/hecos/cah

require 'dfe/reference_data/cah`

DfE::ReferenceData::CommonAggregationHierarchy::CAH_CATEGORIES_L1

Top-level CAH categories.

Owner: Data Insights.

Users: Data Insight (cross-service-dataform), Becoming a Teacher teams.

Source: https://www.hesa.ac.uk/support/documentation/hecos/cah - taken at version 1.3.4

Quality: Manually updated on an ad-hoc basis. Please submit a pull request if inaccuracies or omissions are found.

Field Type Purpose
id ID string A unique identifier
name string The name of the level 1 category
l2_children ID string array The IDs of this category's level 2 children

DfE::ReferenceData::CommonAggregationHierarchy::CAH_CATEGORIES_L2

Mid-level CAH categories.

Owner: Data Insights.

Users: bat-dataform, cross-service-dataform

Source: https://www.hesa.ac.uk/support/documentation/hecos/cah - taken at version 1.3.4

Quality: Manually updated on an ad-hoc basis. Please submit a pull request if inaccuracies or omissions are found.

Field Type Purpose
id ID string A unique identifier
name string The name of the level 2 category
l1 ID string The ID of this category's level 1 parent
l3_children ID string array The IDs of this category's level 3 children

DfE::ReferenceData::CommonAggregationHierarchy::CAH_CATEGORIES_L3

Bottom-level CAH categories.

Owner: Data Insights.

Users: bat-dataform, cross-service-dataform

Source: https://www.hesa.ac.uk/support/documentation/hecos/cah - taken at version 1.3.4

Quality: Manually updated on an ad-hoc basis. Please submit a pull request if inaccuracies or omissions are found.

Field Type Purpose
id ID string A unique identifier
name string The name of the level 3 category
l1 ID string The ID of this category's level 1 grandparent
l2 ID string The ID of this category's level 2 parent

DfE::ReferenceData::CommonAggregationHierarchy::HECOS_CAH_SUBJECT_MAPPINGS

Mapping from HECoS subject codes to level 3 CAH IDs.

Owner: Data Insights.

Users: bat-dataform, cross-service-dataform

Source: https://www.hesa.ac.uk/support/documentation/hecos/cah - taken at version 1.3.4

Quality: Manually updated on an ad-hoc basis. Please submit a pull request if inaccuracies or omissions are found.

Field Type Purpose
id ID string A HESA DEGSBJ code for this degree subject (from HECoS)
cah_l3_id string The CAH level 3 ID corresponding to this HECoS subject