The 90 percent target language rule, ACTFL's most ignored position statement.

ACTFL issued the ninety-percent target language position statement in 2010. Sixteen years later most Spanish departments are running closer to fifty percent and pretending otherwise. The position is defensible. The implementation is what we keep getting wrong.

What the position actually says

The 2010 ACTFL Position Statement on the Use of Target Language in the Classroom recommends that ninety percent or more of class time at all levels of instruction be in the target language. The position is not a mandate. It is a research-grounded recommendation that the field treat target language use as the default and English use as the exception.

The reasoning is straightforward. In most US Spanish classrooms, the class period is the only sustained Spanish-language environment the student gets. If the teacher conducts class in English, the input volume drops by an order of magnitude. The research on input volume (Krashen, VanPatten, Norris and Ortega) all converges on the same point: more input, more acquisition. Fewer minutes of input, less acquisition.

The Crouse implementation framework

Don Crouse's widely-cited article (Going for 90% Plus: How to Stay in the Target Language, The Language Educator, 2012) gave teachers an operational version of the position. Crouse identified the moments when teachers habitually break into English and offered alternatives.

Routine transitions

Starting class, transitioning between activities, ending class. These were the worst offenders in his observations. The fix is to develop Spanish routines: greetings, daily questions, transition phrases that students learn by repetition.

Comprehension checks

Teachers often dropped into English to confirm understanding. The fix is to use comprehension checks that are themselves in the target language: yes-or-no questions, either-or questions, gesture responses, true-false hand signals.

Behavior management

Discipline interactions in English broke the immersion instantly. The fix is to teach the classroom-management phrases in Spanish on day one and to use them consistently. The same set of fifteen phrases covers most of what a teacher actually needs.

Complex explanations

Some explanations genuinely cannot be done in the target language at the student's level. The Crouse recommendation is to use translation deliberately and briefly, then return to Spanish. This is consistent with the translanguaging research that came later.

Language educators and their students should use the target language as exclusively as possible (90% plus) at all levels of instruction during instructional time and, when feasible, beyond the classroom.

The research base under the position

Three lines of evidence support the recommendation.

First, the input-quantity research. Krashen 1982 onward, VanPatten 1996 onward, Norris and Ortega 2000, and many replications: input matters, and the dose-response is roughly linear within a school year. Doubling the input does not double the acquisition, but it produces consistently better outcomes than halving it.

Second, the time-on-task research from general education (Brophy, Good, 1986; Hattie, 2009). Time on task is one of the most robust predictors of student learning across domains. For language specifically, time on task is time in the target language.

Third, the teacher-language modeling research (Bateman 2008, Foreign Language Annals; Wong 2010, Hispania). Students calibrate their own use to the teacher's. Classes where teachers spoke mostly Spanish produced students who spoke mostly Spanish. Classes where teachers spoke mostly English produced students who spoke mostly English. The teacher sets the linguistic norm.

Why ninety percent is hard

Four obstacles teachers consistently report.

Student protest

Students new to a high target-language classroom complain. They feel overwhelmed in the first weeks. The complaints reach parents, parents reach administrators, and the teacher gets pressure to back off. The fix is to prepare students and parents from day one with explicit framing: this is how this class runs, here is the research, here is what success looks like.

The comprehensibility floor

The ninety-percent position assumes the input is comprehensible. Ninety percent of target language that is over students' heads is not pedagogy. It is noise. Teachers need to develop comprehensible-input techniques (slow speech, gestures, visuals, controlled vocabulary, circling) for the position to work at lower levels.

The instructor's own comfort

Non-native teachers and underprepared teachers sometimes avoid the target language because they are unsure of their own production. This is a real and underdiscussed problem. The honest answer is that teacher proficiency is a professional requirement. The dishonest answer (lower the target language use to fit the teacher's comfort) shortchanges every student in the room.

The administrator who walks in

Many teachers report dropping into English when an administrator (who does not speak Spanish) enters the room. The fix is to brief administrators in advance about what a target-language classroom looks like and how to observe it.

Heritage classrooms and the position

The ninety percent position was written with L2 classes in mind. Heritage classes complicate it. Heritage students often have native or near-native oral comprehension. The input-volume rationale still holds, but the comprehensibility-floor concern almost disappears. Heritage classrooms can run target-language with much less scaffolding.

The complication is the academic register. Heritage students may need explicit attention to formal Spanish registers that their family Spanish did not include. That attention work sometimes benefits from translanguaging moments, as the previous article in this archive on translanguaging argued. The ninety percent rule and the translanguaging framework are compatible if you treat the English moments as deliberate and minor, not as defaults.

How to actually get to ninety

Audit a single class period. Set a timer. Every time you speak English, restart it. At the end of class, sum the English time. For most US Spanish teachers running ordinary high school classes, the first audit comes in at thirty to fifty percent English. The first goal is to cut it in half. The second goal is to cut it in half again.

Tools that help in roughly this order.

Posted Spanish phrase walls for routines and management. A weekly student leader who handles transitions in Spanish. Comprehension check techniques (yes-or-no, either-or, true-false) that stay in Spanish. A class set of ten gesture vocabulary items (slow down, repeat, louder, I do not understand) that students learn day one. A daily two-minute warm-up routine entirely in Spanish. A pacing plan that surfaces complex explanations and plans them ahead of time so the teacher can pre-render them in Spanish.

What this means for your Monday

Run the audit. One class. Real timer. Count the English seconds. The number will surprise you.

Pick one category from the Crouse framework where you leak the most English (routines, comprehension checks, behavior, complex explanations) and build the Spanish replacement for that category this week. Drill it. By Friday, that category should be in Spanish. Next week, pick the next leakiest category. The audit is the diagnostic. The replacement is the work. Within a semester, you can be at ninety. Within a year, you can be consistently there.