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Calculated Grade Snapshot Events

Blackboard Learn’s Caliper Analytics stream emits a CalculatedGradeSnapshotEvent nightly for any grade that is recalculated.

Here is some of the key data that is associated with these events:

CalculatedGradeSnapshotEvent

object.course.courseNumber - the course batch_uid (i.e. the ID sent in by LIS or Data Integration)

object.itemId - the primary key for the calculated grade column

user.id - contains a unique ID of the user (the ID is known to Bb)

object.score - score provided

object.isCourseGrade - true if final grade

user.extensions - contains a tag called bb:user.externalId with the batch_uid for the user

action - Graded

Sample Payload

Here is a sample of what a payload might look like:

{
    "sensor": "54b54b42-dd02-42f8-88ed-07bd719bfb7c",
    "sendTime": "2021-01-05T08:20:38.600Z",
    "dataVersion": "http://purl.imsglobal.org/ctx/caliper/v1p1",
    "data": [
        {
            "@context": [
                "http://caliper.blackboard.com/ctx/caliper/v1/Context",
                "http://purl.imsglobal.org/ctx/caliper/v1p1"
            ],
            "type": "http://caliper.blackboard.com/caliper/v1/CalculatedGradeSnapshotEvent",
            "id": "54b54b42-dd02-42f8-88ed-07bd719bfb7c",
            "actor": {
                "id": "https://caliper-mapping.cloudbb.blackboard.com/v1/sites/54b54b42-dd02-42f8-88ed-07bd719bfb7c/applications/learn",
                "type": "SoftwareApplication"
            },
            "action": "Graded",
            "object": {
                "@context": [
                    "http://caliper.blackboard.com/ctx/caliper/v1/Context",
                    "http://purl.imsglobal.org/ctx/caliper/v1p1"
                ],
                "type": "http://caliper.blackboard.com/caliper/v1/CalculatedGrade",
                "id": "https://caliper-mapping.cloudbb.blackboard.com/v1/sites/54b54b42-dd02-42f8-88ed-07bd719bfb7c/gradableItems/_12345_1/calculatedGrade/329189703",
                "name": "",
                "description": "",
                "itemId": "_12345_1",
                "scorePossible": 100,
                "isCourseGrade": false,
                "syncVersion": 329189703,
                "user": {
                    "id": "https://caliper-mapping.cloudbb.blackboard.com/v1/sites/54b54b42-dd02-42f8-88ed-07bd719bfb7c/users/b1ea2fccd95144a29e5e906034e4ddee",
                    "type": "Person",
                    "extensions": {
                        "bb:user.id": "_12345_1",
                        "bb:user.externalId": "54b54b42-dd02-42f8-88ed-07bd719bfb7c"
                    }
                },
                "course": {
                    "id": "https://caliper-mapping.cloudbb.blackboard.com/v1/sites/54b54b42-dd02-42f8-88ed-07bd719bfb7c/courses/ab336626104044daab61e9a9d72ac8e2",
                    "type": "CourseOffering",
                    "extensions": {
                        "bb:course.id": "_12345_1"
                    },
                    "members": [],
                    "courseNumber": "BIO-101"
                },
                "extensions": {}
            },
            "eventTime": "2021-01-05T08:20:33.572Z",
            "edApp": {
                "id": "https://caliper-mapping.cloudbb.blackboard.com/v1/sites/54b54b42-dd02-42f8-88ed-07bd719bfb7c/applications/learn",
                "type": "SoftwareApplication"
            },
            "membership": {
                "id": "https://caliper-mapping.cloudbb.blackboard.com/v1/sites/54b54b42-dd02-42f8-88ed-07bd719bfb7c/courses/ab336626104044daab61e9a9d72ac8e2/members/b1ea2fccd95144a29e5e906034e4ddee",
                "type": "Membership",
                "extensions": {
                    "bb:course.id": "_12345_1",
                    "bb:course.externalId": "BIO-101",
                    "bb:user.id": "_12345_1",
                    "bb:user.externalId": "54b54b42-dd02-42f8-88ed-07bd719bfb7c"
                },
                "member": {
                    "id": "https://caliper-mapping.cloudbb.blackboard.com/v1/sites/54b54b42-dd02-42f8-88ed-07bd719bfb7c/users/b1ea2fccd95144a29e5e906034e4ddee",
                    "type": "Person",
                    "extensions": {
                        "bb:user.id": "_12345_1",
                        "bb:user.externalId": "54b54b42-dd02-42f8-88ed-07bd719bfb7c"
                    }
                },
                "organization": {
                    "id": "https://caliper-mapping.cloudbb.blackboard.com/v1/sites/54b54b42-dd02-42f8-88ed-07bd719bfb7c/courses/ab336626104044daab61e9a9d72ac8e2",
                    "type": "CourseOffering",
                    "extensions": {
                        "bb:course.id": "_12345_1"
                    },
                    "members": [],
                    "courseNumber": "BIO-101"
                },
                "roles": [
                    "Learner"
                ],
                "status": "Active"
            },
            "extensions": {}
        }
    ]
}