Knowing formation names does not always make it clear which one to teach first—or whether two names describe the same thing. This guide is for coaches who want a practical framework for youth, school, recreational, or adult teams.
The useful distinction is between starting alignments and movement concepts. “4-out, 1-in” describes where players begin; “motion offense” describes how they continue to move. They answer different questions. Below are five alignments and three movement concepts, each with a likely first option and a continuation if it is covered.
Written by the developer of BoardStrategist, a basketball tactics board and scorebook app for iPad and iPhone. The organizing ideas work on a whiteboard too.
Part 1: Five starting alignments
In the half-court examples, the basket is at the bottom. Numbers 1–5 are conventional role labels, not fixed positions.
1. 3-out, 2-in
Three players are spaced outside and two occupy interior areas, often near the low blocks. This familiar shape makes post entries and screening combinations available and can put two players near the offensive glass. A first option is a wing entry to a post player. If that is denied, the opposite big can lift to the high post for a high-low look, or the wing and post can run a pick-and-roll.
2. 4-out, 1-in
Four players space the perimeter and one plays inside. With fewer bodies in the paint, driving lanes and cuts can open up for guards. A common first read is drive-and-kick. If the drive is cut off, the post player can move toward the ball for a pick-and-roll while the other perimeter players adjust to preserve spacing. This shape works best when players understand when to cut, fill, and relocate rather than standing still.
3. 5-out
All five players begin outside the three-point line, leaving the lane open. Passing, cutting, and backdoor cuts become central options. A pass-and-cut action is an easy entry point: the passer cuts toward the basket, and a teammate fills the vacated space. Continue by filling open spots and reading the defense. Because every player may need to shoot from outside, the roster and the team’s skill development matter.
4. Horns
The ball handler starts near the top, two bigs set up around the elbows, and two players occupy the corners. From the corners through the elbows, the alignment resembles the horns of an “A.” The handler can use a screen on either side. One big can roll while the other pops or becomes an outlet. If the first pick-and-roll is stopped, use a re-screen with the opposite big, or pass to an elbow player and flow into a handoff.
5. Princeton offense
Developed and refined under Pete Carril at Princeton, this is better understood as a system than a single formation. Backdoor cuts, on-ball and off-ball screens, and disciplined spacing are recurring features. Entry shapes can include 4-out, 1-in; a 2–3 high-post look; or a 1–2–2 / 5-out alignment. One teaching entry is a high-post pass followed by a backdoor cut. If the cut is not open, flow into a handoff or a split cut around the post. The precise sequence depends on the system a team adopts.
Part 2: Three movement concepts
These ideas can be paired with an alignment above; they are not all separate starting shapes.
6. Motion offense
Motion offense describes a family of approaches built around principles such as pass-and-cut, screening into open space, and filling vacated spots. It is not one fixed play. The defense’s response helps determine the next action, which can make the offense harder to predict. For a new group, keep the starting alignment stable and teach only two or three movement rules at first. Princeton is commonly discussed within the broader motion-offense family.
7. Early offense
Early offense attacks before the defense gets fully organized, between a fast break and a settled half-court possession. After a rebound, players sprint into defined lanes and look for an early scoring chance. A first option may be an advance pass to a big running to the rim. If it is not there, a trailing big can set a drag screen. If no advantage appears, flow into the team’s regular alignment without stopping the action.
8. Isolation
Isolation gives a strong one-on-one scorer room to attack, while the other four players spread away from the ball to make help defense more difficult. It can be useful late in a possession or when a favorable mismatch exists. The first option is the matchup itself. If help comes, pass to the teammate left open behind it. Use isolation selectively: if the other four players stop moving, the defense can focus on the ball.
Which should a team learn first?
There is no need to install all eight at once. Choose one or two starting alignments, then add one movement concept. For many school teams, 3-out, 2-in or 4-out, 1-in provides clear roles and familiar first options. Make sure everyone can recognize the first action and one answer to the defense before adding another set. A small playbook understood by all five players is more useful than a long list of names.
Use motion to explain what a still diagram cannot
A formation diagram shows where players begin; the difficult part is often what they do when the first option disappears. BoardStrategist’s tactics library includes baseline and sideline inbounds, common actions, half-court sets, systems, transition, press breaks, and late-game plays. Relevant entries include Horns, Princeton, motion offense, 5-out delay, dribble-drive motion, and early offense. Plays include multiple defensive reads, step descriptions, key points, and playback at 0.5×, 1×, or 2×. “Open in tactics board” lets you adapt a play to your team. The sideline box play is a free sample; other library plays require Pro. See how to animate a play on a tactics board.
Frequently asked questions
What is the difference between motion and set offense?
A set offense follows a defined arrangement and sequence. Motion offense uses ongoing principles, such as moving after a pass, to guide what happens next. A set can be easier to repeat; principles can create more reads. Teams often use both.
Which formations work for middle- and high-school teams?
Start with a basic alignment such as 3-out, 2-in or 4-out, 1-in. Roles are easier to explain, and teams can build simple post entries or drive-and-kick reads.
Why use Horns?
Two players at the elbows give the ball handler a screen option to either side. The second big can pop or screen later, creating additional reads if the defense switches or sends help.
How many formations should players learn?
Start with one alignment and teach how to respond when the defense takes away the first option. Add a second shape when the team can execute the first one reliably.
Takeaway
Keep starting positions and movement principles distinct. Teach one alignment, one first option, and one continuation; then build from the reads your team can execute.