---
title: "Intervention Design"
url: https://docs.growamal.com/en/how-it-works/intervention/
language: en
---

# Intervention Design

Once a student has a resolved profile, the loop asks what support to try. Amal
answers with a closed, deterministic catalog rather than free-form planning. A
profile maps to one bundle or a non-bundle support outcome, the bundle has a defined
shape, and the teacher reviews and activates it.

## 14 bundles + 7 support objects, mapped deterministically

There are 14 named intervention bundles, closed and curated rather than generated.
A deterministic **profile→bundle map** (21 rows) selects one bundle **or** a
non-bundle routing/support outcome from the student's primary profile (refined by
access driver, comprehension subprofile, or modifier driver). Seven of the 21 map
rows resolve to a non-bundle outcome — a monitoring process, a light-support action,
or a routing guard — rather than an intervention plan. Same profile in, same result
out, with no randomness and no LLM in this path.

## The Threaded Path Model

A bundle is never a single drill. Each bundle is built as three woven parts so the
child practices their main need while staying connected to surrounding skills:

| Part | Cumulative-cycle allocation | Role |
|---|---|---|
| **Anchor** | Primary, largest share | The primary skill the bundle is built around, and always the dominant allocation across the cycle. |
| **Supporting threads** | Smaller secondary range | One or two linked skills (never more than two) that reinforce the anchor. |
| **Asset bridge** | Smallest range | A documented **strength** the child already has, used as a foothold into the harder work. |

> **Note:** These allocations are **cumulative-cycle ranges across the intervention cycle**,
> not fixed per-session percentages. The anchor always carries the largest share
> across the cycle. A supporting thread can never out-weigh it, and there are never
> more than two supporting threads. The asset bridge is built on a real, observed
> strength; when there isn't enough evidence to name one, it is left empty rather
> than invented.

## Scaffold tiers: set per (student × skill × bundle × task type)

Scaffolding controls how much support wraps a task. There are three tiers:

| Tier | Meaning |
|---|---|
| `Level_1_Foundation` | Most support; foundational entry. |
| `Level_2_Targeted` | Moderate, targeted support. |
| `Level_3_Independence` | Least support; building independence. |

> **Warning:** A scaffold tier is **not** a student-wide level. It is set per
> **(student × skill × bundle × task type)**, so the same child can be at
> `Level_1_Foundation` for one skill and `Level_3_Independence` for another in the
> same week. It is also **never shown to the student**: children see tasks and
> encouragement, never a level label.

## Smart clustering

Teaching 28 children one at a time does not scale. Smart clustering groups students
who can be taught together: those sharing the same bundle, anchor skill group,
scaffold tier, and a compatible delivery mode, with sufficient data. Students with
incomplete data or an acute-regression alert are deliberately excluded from
clusters; they need individual attention, not a group plan.

## The teacher decides (V-12)

Everything above is a recommendation. The bundle, the grouping, and the scaffolding
are proposals the teacher reviews and activates, alone or for a cluster, through the
activation workflow. The system proposes and explains why; the teacher approves,
changes, or overrides (V-12). Nothing activates on its own.

## Where to go next

- [Intervention Bundles guide](https://docs.growamal.com/en/guides/intervention-bundles/): the 14 bundles, 7 support objects, and the full profile→bundle map.
- [Smart Clustering guide](https://docs.growamal.com/en/guides/smart-clustering/): the clustering keys and exclusion rules.
- [Teacher Activation guide](https://docs.growamal.com/en/guides/teacher-activation/): the review-and-activate workflow.
- [Safety Rules](https://docs.growamal.com/en/how-it-works/safety/): the guardrails wrapping every activation.
- [Glossary](https://docs.growamal.com/en/glossary/): bundle, anchor, asset bridge, scaffold tier defined.