What happens when the public school system adds a whole new preschool grade for 4-year-olds?

With a new grade called transitional kindergarten, there are younger kids in elementary school this year than ever before in California — and with that comes its own set of challenges for schools who are trying to implement it.

In 2021, California passed a law that gave districts four years to make TK universal for 4-year-olds. TK has been around since 2012, but only for a small subset of older 4-year-olds who just missed the kindergarten age cutoff by a few months.

“It was a big undertaking,” said Laura Hill, policy director and senior fellow at the Public Policy Institute of California. “There are plenty of folks who might say that was not enough time, not enough resources,  but it is the case that the state did try to be thoughtful about how to make it happen.”

The state doesn’t yet have data on total enrollment this school year — the first year that TK is universal — though district data, such as from Los Angeles Unified School District, shows enrollment has grown to the highest total yet.

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Expanding access statewide has required new infrastructure — with money that some districts don’t have. It's required a new group of teachers with the right credentials. And while a year might not seem like much, 4-year-olds have different developmental needs than kindergartners.

“Many of them are still in need of naps,” said Hill, who co-authored a report on the rollout of TK last year.

And for some, it might be their first time in a big group setting.

In one school district, Hill and her colleagues interviewed educators who described the first week of school with younger 4-year-olds as “shark week” — because of the high number of biting incidents.

“Biting is just one of those things that a child who is frustrated and doesn't have the words and isn't feeling like they can cope right now might resort to,” Hill said. “What they were seeing was both the children not quite ready making this transition and the adults having less experience working with children this young and helping them kind of sort this all out.”

Mary Edge-Guerra, who oversees TK at Downey Unified School District, points out there are children who are only 3 years old at the start of the school year since they just have to be 4 by September.

“As TK evolved in bringing younger students, it’s looking more preschoolish than it once did than when it first started,” she said. “They need that developmental time to grow, and as their gross motor and just developmental milestones are being met, then the instruction needs to adjust.”

From lunch to naps, 4-year-olds need more care

During lunchtime at Smith Elementary in Lawndale, TK teacher Lauren Bush’s instruction goes beyond the classroom. As her students lined up in the cafeteria, she guided them through the menu options from the salad bar to the entree choice of a burrito or tamale.

Teachers help children eat their lunches at Marguerita Elementary School in Alhambra.

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“ Wow, Jasmine! That's healthy,” Bush said to one student after she asked for carrots and cucumbers.

When the kids sat down at their tables, she also helped them open up their food packages, or instructed them to blow on their burritos to cool them down.

To help accommodate younger kids at lunchtime, Principal Cristal Moore said the school shifted their lunch schedules this year so that TK students are only with kindergartners in the cafeteria.

“We knew they were gonna need more help with, ‘Can you put a straw in my milk?’ — just really trying to make sure that we were there to support them,” Moore said.

Teachers must also decide whether to set aside time for a nap during the school day — TK does not require one.

When Bush started teaching TK a few years ago, she didn’t include a nap in the six-hour schedule and realized her students were more likely to whine, fight and cry at the end of the day without a break.

Nap time at Marguerita Elementary.

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“The resting is good for them, even if they don't sleep,” Bush said. “It's just a total reset. It's a lot of stimulation for a lot of hours for their little bodies.”

Bathroom support

Four-year-olds may also still need help going to the bathroom, or have accidents at school. The state Department of Education requires districts to admit all eligible students, regardless if they’re potty-trained. And for many teachers, helping children with the bathroom or changing diapers isn’t part of their union-bargained duties.

Some districts have aides and health assistants who can help. Others call a students’ parents if they have an accident at school.

At Marguerita Elementary School in Alhambra, TK aide Veronica Gonzalez is trained to assist. She said while most students can go to the bathroom on their own, others still need help.

“Last year we dealt with one [student] and she was only afraid of going to the bathroom because she was afraid of flushing the toilet… and then for like two weeks, we’d flush the toilet together.”

Facility requirements 

Instruction for TK is supposed to be based around play, versus academic.

In Claudia Ralston’s TK classroom in Alhambra, the room is set up so students can learn how to interact with their peers. There are play stations, including a pretend role-play area with a grocery checkout counter.

“Obviously they're only 4 years old, they need to move around while they're learning. So that, that in itself –the environment is different,” Ralston said. “We are setting up an environment so that they are learning as well at the same time.”

The state has different requirements for new TK classrooms than for upper grades. They have to be larger, so kids have room to play. They need to have bathrooms inside the classroom or close by, and they have to be close to parent drop-off areas. But not all schools have built out these spaces.

“We need to make sure that families have access to [TK] and that it's as good as it can be,” Hill said.