The simplest way to think about it: an LMS is for teaching, an SIS is for running the school.

An LMS is where teachers post lessons, students submit assignments, and learning happens day to day. An SIS is where the school’s official records live – enrollment, attendance, the gradebook that generates transcripts, scheduling, and the data that flows to your state education department.

Both are essential. They just do different things, and confusing the two is one of the most common mistakes schools make when evaluating software.

Yes – every K‑12 school needs both. An SIS is required for compliance: you cannot submit attendance records, generate transcripts, or report to your state without one. An LMS handles instruction, which is the actual work of school.

The question isn’t whether you need both – it’s whether you’re running them as two separate tools that require integration, or as one integrated platform where the data flows naturally between them.

No. An LMS is not built to handle the compliance and record-keeping functions of an SIS. It has no enrollment module, no state reporting engine, no official transcript generation, and no attendance system that meets regulatory requirements.

Some LMS platforms include basic gradebook features, which can create confusion – but a gradebook in an LMS is not the same as the official grades of record that live in an SIS and flow to transcripts.

A traditional SIS cannot replace an LMS. Legacy student information systems were built for administration, not instruction – they have no mechanism for posting lessons, collecting assignments, running discussions, or managing course materials.

However, some modern SIS platforms have expanded to include LMS functionality. When that integration is native – built into the same data model rather than bolted on – it can genuinely replace the need for a separate LMS.

When your LMS and SIS are two separate tools, data has to travel between them – usually through an integration or manual process. That creates real problems:

Rostering sync errors. Students added in the SIS may not appear in the LMS for days. Students who leave the school may retain LMS access longer than they should.

Grade discrepancies. Teachers post grades in the LMS; administrators need them in the SIS. The handoff between the two creates opportunities for error and extra work.

Two logins, two contracts, two support relationships. When something breaks at the integration point, both vendors point at each other.

Incomplete student records. Academic work happening in the LMS doesn’t automatically connect to the student’s full profile in the SIS – so no one has the full picture in one place.

Google Classroom is an LMS – specifically, a lightweight one. It handles assignment distribution, submission, and teacher feedback within Google’s ecosystem. It has no enrollment system, no attendance, no state reporting, and no transcript generation.

Schools using Google Classroom still need a separate SIS for the record-keeping and compliance functions Google Classroom doesn’t touch. The two typically connect via a rostering integration like Clever or ClassLink.

Canvas is an LMS. It is one of the most widely used learning management systems in K‑12 and higher education. Like Google Classroom, it handles instructional content, assignments, and communication – but it is not a system of record and cannot replace an SIS.

Canvas integrates with most major SIS platforms. Schools running Canvas still need a separate SIS for attendance, enrollment, transcripts, and state reporting.

SIS first, always. Your SIS is your system of record – it’s where student enrollment, attendance, and official grades live. A school cannot function without one. Your LMS depends on the SIS for accurate rosters and student data.

Implementing an LMS before an SIS is like building walls before pouring a foundation. The LMS needs to know who the students are, which courses they’re in, and which teachers to assign them to – all of which comes from the SIS.

The biggest area of overlap is the gradebook. Most LMS platforms include a gradebook for teacher use; most SIS platforms include a gradebook for official records. In schools running separate tools, this creates a two-gradebook problem – teachers work in one, administrators look at another, and keeping them in sync requires a process.

Other areas of overlap include family communication portals, course calendars, and basic student profiles. When these exist in both systems, schools end up maintaining duplicate data and managing two family-facing experiences.

The most common integration method is rostering via a middleware service like Clever, ClassLink, or OneRoster. The SIS pushes student and teacher data to the middleware, which then provisions accounts and course sections in the LMS.

Grade passback – where grades entered in the LMS flow back to the SIS – is also common, though it is typically one-directional and requires setup from both vendors.

These integrations work, but they introduce latency, failure points, and dependency on a third party. When the rostering service is down or misconfigured, it affects both systems simultaneously.

A fully integrated SIS and LMS is a single platform where both functions – instructional management and school record-keeping – are built on the same data model. Not two products with an API between them, but one product where assignments, grades, attendance, and enrollment all live in the same place.

This matters because it eliminates the integration tax. Rosters are always current because there is no sync to run. Grades are always accurate because there is no passback to configure. Teachers see the same student profile that administrators see. Families log in once.

Yes. Alma includes a fully integrated LMS alongside its SIS – assignment creation and submission, lesson planning, standards alignment, and family-facing course content – all within the same platform as attendance, gradebook, scheduling, and state reporting.

Schools using Alma don’t need a separate LMS, a rostering middleware service, or a grade passback configuration. The LMS and SIS share one data model, one login, and one family portal.